Remember also that the Tiger and Pather were designed with very different characteristics and production methods in mind.
Germany built tanks as heavy equipment and a lot of companies involved in their production also built things such as locomotives, train cars and construction equipment. In general this equipment requires similar equipment and skills to manufacture, but they are not typically produced in vast numbers. Germany essentially took people who could build heavy equipment (and all thier techniques and processes) and tried to get them to produce the equipment in large numbers.
The end result were ultimately heavier, more complex, higher performing tanks, which had difficulty being produced in large numbers. Individual vehicles tended to be more unique as well, parts could not always be easily swapped from Tiger to Tiger.
The US instead approached the automobile industry, which had considerable experience in producing vast numbers of cars, and used thier techniques and processes to build heavier equipment.
The result here was an OK tank, with some drawbacks, but produced by the tens of thousands. With each stamped out cookie cutter style, parts could almost always be easily swapped in the field.
Was a Tiger better than a Sherman, by a significant degree, but when you have 10 Shermans to every Tiger its not quite as clear cut.